Bo ring-mill



(No Model.)

G. T; REISS. BoringY Mill. N0. 241.719. .patented May 17,188l.. Y

. MLQQ@ M ATTORNEY N. PETERS. Hwb-Liihcgraphnr. Walhivvg'kn. IIC

W] T NESSES [NI/EN T OR www@ UNITED ,y STATES PATENT OFFICE.

GEORGE T. REISS, OF HAMILTON, OHIO.

BORING-MILL.

SPECIFICATION forming part` of Letters Patent No. 241,719, dated May 1'7, 1881,

Application filed March 5, 1881. (No model.)

To all whom it may concer/u Bc it known that I, GEORGE T. REIss, of Hamilton, Butler county, Ohio, have invented certain new and useful Improvements in Boring-"Wills, of which the following is a specifica'- tion. l

This invention relates to the arrangement ot' the tool-bar of a boring-mill in such manner that the point of attachment for the balancing' device may have an unimpeded movement without the necessity of increasing the length ofthe har or the distance between its bearings.

In the accompanying drawing, A is the saddle of a boring-mill. It is adapted` as usual, to slide upon the cross-rail.

B is the usual swing mounted upon the saddle, and arranged to swing, it' desired.

E is the tool-bar, tted to slide in the swingbearin gs C and D and prevented l' rom rotating by the feather G.

J is the tool-holder. y

H is the balancing rope or chain, which may have one end ixed to some stationary part of the sliding work or ot' the machine-framing, while `the othcrend supports a balancingweight to counterhalance the weight of the bar E. The rope or chain H passes around the sheave I, which is attached to the bar.

If desired, the sheave may be omitted, and the lixed end of the cord or chain may be attached directly to the bar and he balanced by a suitable weight.

The cord orchain is carried over an y suitable arrangement of sheaves. l

As thus far described the device is precisely as is common in boring-mills. l

It is obvious that in this device as thus far described the traverse of the bar E through the swing-bearings will be limited by the distance between those bearings, or, rather, the dis- `attach the sheave or other device for reeeivin g the balancing-cord at any desired point in the length of the bar, and at the same time to utilize in travel all of the appropriate length of the bar. The bar may have a traverse of four feet, while the distance between the bearings is but two feet. I accomplish this by forming an opening, F, in one of the bearings, sowthat the sheave or other attachment may pass by the bearing. By means ot'this construction the sheave may be located at the eXtreme end of the bar orat any pointon its length. The opening may, it' requisite, be formed in both bearings, and it is found in practice that its presence does not detract from the function of the bearings, especially when both sides of the opening are connected. as shown.

I claim as my invention- The combination, with a tool-bar and an attaching device for a chain or rope projecting from the surface ot' said bar, of a bearing for the bar provided with an openn g outward from the surface of the bar, the said opening being adapted to permit the passage of said attaching device, substantially as specified.

GEORGE T. REISS. Witnesses: ALEX. GORDON,

. JAMES W. SEE. 

